diff --git a/mm/Kconfig b/mm/Kconfig
index 880a5221a5ea..183096ddd744 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -519,15 +519,6 @@ config CMA_DEBUGFS
 	help
 	  Turns on the DebugFS interface for CMA.
 
-config  CMA_ALLOW_WRITE_DEBUGFS
-	depends on CMA_DEBUGFS
-	bool "Allow CMA debugfs write"
-	help
-	  Say 'y' here to allow the CMA debugfs write.
-	  CMA debugfs write could be risky as it allows
-	  cma allocation, so it is not recommended to
-	  enable this option on any production device.
-
 config CMA_AREAS
 	int "Maximum count of the CMA areas"
 	depends on CMA
diff --git a/mm/cma_debug.c b/mm/cma_debug.c
index 42ad17b64001..bc9a7d681b7a 100644
--- a/mm/cma_debug.c
+++ b/mm/cma_debug.c
@@ -74,7 +74,6 @@ static int cma_maxchunk_get(void *data, u64 *val)
 }
 DEFINE_SIMPLE_ATTRIBUTE(cma_maxchunk_fops, cma_maxchunk_get, NULL, "%llu\n");
 
-#ifdef CONFIG_CMA_ALLOW_WRITE_DEBUGFS
 static void cma_add_to_cma_mem_list(struct cma *cma, struct cma_mem *mem)
 {
 	spin_lock(&cma->mem_head_lock);
@@ -133,13 +132,8 @@ static int cma_free_write(void *data, u64 val)
 
 	return cma_free_mem(cma, pages);
 }
-#else
-#define cma_free_write NULL
-#endif
-
 DEFINE_SIMPLE_ATTRIBUTE(cma_free_fops, NULL, cma_free_write, "%llu\n");
 
-#ifdef CONFIG_CMA_ALLOW_WRITE_DEBUGFS
 static int cma_alloc_mem(struct cma *cma, int count)
 {
 	struct cma_mem *mem;
@@ -170,10 +164,6 @@ static int cma_alloc_write(void *data, u64 val)
 
 	return cma_alloc_mem(cma, pages);
 }
-#else
-#define cma_alloc_write NULL
-#endif
-
 DEFINE_SIMPLE_ATTRIBUTE(cma_alloc_fops, NULL, cma_alloc_write, "%llu\n");
 
 static void cma_debugfs_add_one(struct cma *cma, struct dentry *root_dentry)